以热流密度表示的傅立叶定律、牛顿冷却公式及斯忒藩－玻耳兹曼定律是应当熟记的传热学公式。试写出这三个公式并说明其中每一个符号及其意义。
参考答案：
项目决策应遵循的原则不包括( )。
A．科学决策原则B．风险责任原则C．审议决策原则D．多目标综合决策原则
The nurse is interviewing the mother of a 7-year-old child. Which of the following symptoms reported by the mother would most lead the nurse to suspect that the child has type 1 diabetes（）
A. Recent bed wetting.
B. Poor appetite.
C. Weight gain.
D. Boundless energy.
